Review guide solutions #1 - Chem 1057 Page 1 J. Walcott...

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Chem 1057 Page 1 J. Walcott LEARNING STRATEGIES CENTER Fall 2011 Review Guide #1 Supplemental Problems Solutions 1. Please check answers in the Solutions Manual. 2. Two contributing resonance structures for a polyatomic anion (overall charge = -1) are shown below: C C C H O C C C H H H H H H H H O H -1 0 -1 -1 0 A B a.) Indicate the formal charge on each atom labeled in the resonance structures above. Write the formal charge in the appropriate box. b.) Which resonance structure, A or B is the less important contributor to the actual structure of the resonance hybrid? Indicate your choice below, and provide a reason for your answer. Structure A is the less important resonance contributor because oxygen is more electronegative than carbon and thereby it is better for oxygen to assume the negative charge. 3. Three contributing resonance structures for a polyatomic molecule are shown below: N N N H 3 C N N NH H 3 C H 3 C N N NH +1 0 +1 0 A B C
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Chem 1057 Page 2 LEARNING STRATEGIES CENTER Fall 2011
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This note was uploaded on 03/13/2012 for the course CHEM 2183 at Cornell University (Engineering School).

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Review guide solutions #1 - Chem 1057 Page 1 J. Walcott...

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